Effect of flaxseed lignan on the dynamics of Lactiplantibacillus plantarum and starter cultures in fermented milk

Abstract

SummaryThe lignan from milled defatted flaxseed powder (DFP) and defatted hull powder (DHP) was extracted using direct alkaline hydrolysis and the quantity of lignan in the extract was estimated to be in the range of 11.74–14.30 mg g−1 flaxseed on a dry matter basis. Qualitative and quantitative analysis of different strains of Lactiplantibacillus plantarum (A1, Lp9, A5) along with yogurt mix culture (NCDC 146), Streptococcus salivarius ssp. thermophilus (NCDC 74) and Lactobacillus delbrueckii ssp. bulgaricus (NCDC 253) revealed that NCDC 74/A5 and NCDC 146/A5 co‐cultures are the most compatible. Buffalo milk containing different concentrations of lignan (100–400 mg of SDG/100 mL milk) was subjected to a fermentation dynamics study. The study revealed that the fermentation dynamics of Lactiplantibacillus plantarum in the milk did not get affected by starter cultures and flaxseed lignan. The results of this study could be useful in developing functional fermented probiotic milk products containing flaxseed lignan.